John Dubis, 49, of Rhode Island, successfully set himself up in the pool house of Jennifer Lopez's Water Mill home for six days in early August, without any of her security realizing he wasn't a legitimate guest. The alleged stalker even parked his car out front and acted as if he were a welcomed guest of the Latina superstar.

J.Lo's rep confirms the story to "omg! Insider," adding, "No one was at the house at the time, this happened early [August]." The "Dance Again" singer had an existing order of protection against Dubis that was issued on March 27 in Westchester County, New York, after he tried to contact Lopez's mother, Guadalupe.

But wait … it gets creepier!

Sources tell the New York Post (who first broke the story) that the former fireman told cops that he was J.Lo's babies' daddy and that she had left the pool house open for him. He then reportedly went so far as to turn her mansion into his own personal summer getaway. The vagrant set up an online pseudonym ("David A Lopez") and posted pics and messages about his stay online. He even did small tasks around the property including clearing an overgrown path.

According to the felony complaint docs obtained by "omg!," Dubis engaged in lewd acts on the property, including masturbation, which he said were performed at the request of Ms. Lopez, whom he referred to at different times as both his sister and wife. He claims she told him she wanted him to "leave his seed, for her to spread throughout the world."

Dubis — a former fireman — was caught on August 8 by Southampton Police when he was eventually confronted by one of Lopez's employees. He was arraigned the next day on two felony and two misdemeanor charges that include burglary, stalking, criminal contempt, and possession of burglar tools. He pleaded "not guilty" and is currently being held on $100,000 bail. The court ordered an exam to determine if he's fit to proceed in reference to the charges, and he's due back in court on August 28.